US20190135165A1 - Lighting device for a motor vehicle - Google Patents

Lighting device for a motor vehicle Download PDF

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Publication number
US20190135165A1
US20190135165A1 US16/091,327 US201716091327A US2019135165A1 US 20190135165 A1 US20190135165 A1 US 20190135165A1 US 201716091327 A US201716091327 A US 201716091327A US 2019135165 A1 US2019135165 A1 US 2019135165A1
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US
United States
Prior art keywords
radiation
visible
lighting device
electromagnetic radiation
light sources
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/091,327
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English (en)
Inventor
Carsten Wilks
Boris Kubitza
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella GmbH and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hella GmbH and Co KGaA filed Critical Hella GmbH and Co KGaA
Assigned to HELLA GmbH & Co. KGaA reassignment HELLA GmbH & Co. KGaA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KUBITZA, BORIS, WILKS, CARSTEN
Publication of US20190135165A1 publication Critical patent/US20190135165A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B60Q1/1415—Dimming circuits
    • B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/13—Ultraviolet light; Infrared light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/64—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
    • F21S41/645—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices by electro-optic means, e.g. liquid crystal or electrochromic devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/02—Testing optical properties
    • G01M11/06—Testing the alignment of vehicle headlight devices
    • G01M11/062—Testing the alignment of vehicle headlight devices using an indicator mounted on the head-light

Definitions

  • the description relates to a lighting device for a motor vehicle.
  • Such lighting devices for motor vehicles can also be called headlamps and they serve to illuminate the driving lane in front of the motor vehicle so that a driver of the motor vehicle can detect obstacles and unevennesses in the dark.
  • the lighting devices may either be halogen, xenon, LED or laser headlamps.
  • LED-headlamps normally consist of several arrays, on each of which several LEDs are arranged.
  • the radiation direction of the headlamp can be influenced. This may for example be achieved by means of swiveling arrays.
  • the radiation direction is determined by a means of detection and it is detected whether a change of the radiation direction is to be executed.
  • Detection is therefore executed by means of the visible light. There is, therefore, a marking visible at least for the means of detection, when the light hits the road surface in front of the motor vehicle.
  • a lighting device which comprises several means of radiation.
  • One part of the means of radiation radiates visible light, the other part radiates infra-red radiation, which is not visible to the human eye.
  • the invention is based on the task of creating a lighting device for a motor vehicle allowing a particularly good illumination of the road surface in front of the motor vehicle. Furthermore, a procedure for the adjustment of such a lighting device shall be created.
  • the lighting device comprises several light sources, which are designed to emit electromagnetic radiation which is visible to the human eye. Furthermore, the lighting device comprises at least one means of radiation for electromagnetic radiation which is not visible to the human eye. This radiation can be particularly in the infra-red range. Furthermore, the lighting device comprises a means of detection for the electromagnetic radiation emitted by the means of radiation and a means of adjustment. The means of detection is designed to emit a signal to the means of adjustment comprising an indication of a radiation direction of the non-visible electromagnetic radiation. The means of detection can also be designed to detect the non-visible electromagnetic radiation and to not detect the light, so that the light does not interfere with the detection of the non-visible electromagnetic radiation.
  • the means of adjustment is designed to influence a radiation direction of the non-visible electromagnetic radiation and a radiation direction of the visible electromagnetic radiation, depending on the signal.
  • the lighting device can comprise several, in particular at least three, means of radiation the non-visible electromagnetic radiation of which can be detected by the means of detection.
  • the means of detection is designed to emit the signal depending on the radiation direction of the several means of radiation.
  • the use of several means of radiation has the advantage that an adjustment of the radiation direction can be executed in a more accurate manner.
  • the radiation can, after all, differ from the desired radiation direction in three dimensions.
  • At least three means of radiation are particularly advantageous to exactly calculate from the radiation direction of all means of radiation how the radiation direction is to be changed.
  • the means of adjustment can be designed to directly influence the radiation direction.
  • This can for example mean, that the means of adjustment is designed to change the arrangement or the orientation of the one or several means of radiation and the light sources.
  • the means of adjustment can for example be designed to swivel an array on which the means of radiation and the light sources are arranged.
  • the means of adjustment can be designed to swivel the one or several means of radiation and the light sources in at least one direction, and in particular in at last two directions depending on the signal.
  • the swivel ability in two directions has in particular the advantage that the radiation direction can be set more accurately.
  • An array on which one or several means of radiation and the light sources are arranged can for example be swiveled around a vertical axis and a longitudinal axis by means of the means of adjustment.
  • the means of adjustment can be designed to indirectly influence the radiation direction.
  • This can for example mean, that an optical means, such as for example a lens or a lens system, which influences the radiation direction, can be moved by the means of adjustment.
  • the lighting device can comprise an optical means for influencing the radiation direction.
  • This can for example be a lens or an optical system designed to influence the radiation direction.
  • the means of adjustment can be designed to swivel the means for influencing the radiation direction in at least one direction and in particular in at least two directions, depending on the signal.
  • the swivel ability in two directions has in particular the advantage that the radiation direction can be set more accurately.
  • the one or several means of radiation and the light sources can be arranged in a geometric shape.
  • the light sources and the one or several means of radiation can be arranged in a circle or in a rectangle.
  • the geometric form can for example be determined by the shape of the array on which the one or several means of radiation and the light sources are arranged.
  • the one or several means of radiation could be arranged on a peripheral area or several peripheral areas of the geometric shape.
  • the peripheral area can be the region comprising the outer edge of the geometric form.
  • the means of radiation can be arranged in the corners of the rectangle or on the circumference of the circle. It is also possible, that the peripheral area does not only comprise the light sources and means of radiation arranged on the outermost positions, but also light sources and means of radiation still having a neighboring light source and/or a neighboring means of radiation being arranged further outward.
  • This arrangement of the means of radiation has in particular the advantage that a change in radiation direction has a large effect on the one or several means of radiation, so that particularly accurate adjustment is possible. Furthermore, the radiation non-visible for the vehicle driver can be noticed in the form of slightly darker areas on the road surface, as a light source could have been replaced by a means of radiation. This slightly darker area is then arranged relatively far towards the outside, so that it is hardly disturbing at all.
  • the light sources and the one or several means of radiation can be designed to simultaneously emit visible and non-visible electromagnetic radiation.
  • the non-visible electromagnetic radiation can be in the infra-red range.
  • electromagnetic radiation visible and non-visible to the human eye is emitted.
  • the visible radiation is sufficiently strong to illuminate a driving lane surface in front of a motor vehicle so that a driver of the motor vehicle can recognize obstacles and unevenness.
  • a radiation direction of the non-visible electromagnetic radiation is detected.
  • the radiation direction of the non-visible and of the visible electromagnetic radiation is adjusted according to the detected radiation direction.
  • FIG. 1 is a schematic view of an embodiment of the invention.
  • FIG. 2 is a schematic view of an embodiment of the invention with an LCD-screen.
  • FIG. 3 is a schematic view of the device from FIG. 2 with an adjustment pattern.
  • FIG. 4 is a schematic view of the device from FIG. 2 with an adjustment pattern.
  • FIG. 1 several light sources 100 and three means of radiation 101 are arranged in a rectangular pattern.
  • the light sources 100 as well as the means of radiation 101 are represented schematically by means of squares.
  • the light sources 100 are designed to emit light which is visible to the human eye.
  • the means of radiation 101 are designed to emit electromagnetic radiation which is not visible to the human eye. This can for example be infrared radiation.
  • the light sources 100 as well as the means of radiation 101 are preferentially embodied as LEDs.
  • an optical means for influencing the radiation direction 102 is represented, which is designed to influence a radiation direction of the light emitted by the light sources 100 and of the electromagnetic radiation emitted by the means of radiation 101 .
  • the means for influencing the radiation direction 102 can, for example, be a lens or a system comprising several lenses.
  • two swivel axes 103 and 104 are represented in FIG. 1 , around which the light sources 100 and the means of radiation 101 can be swiveled.
  • the range of light of the light sources 100 and of the means of radiation 101 can be adjusted. The further downward the light sources 100 and the means of radiation 101 radiate their respective radiation, the shorter is the range of the light.
  • the radiation direction of the emitted radiation can be swiveled in the horizontal plane. This can for example be used for the realization of bend lighting in a motor vehicle.
  • the means of radiation 101 are used for the adjustment of the radiation direction of the light sources 100 .
  • a detection means not represented in the figures is provided, which can detect non-visible electromagnetic radiation. For example, by means of the non-visible radiation detected on the surface of a driving lane in front of the vehicle, the position of the means of radiation 101 and of the light sources 100 can be calculated and whether correction is possibly required.
  • the use of three means or radiation 101 is advantageous to gain a great deal of information on the radiation direction of the light and on the non-visible electromagnetic radiation.
  • the means of radiation 101 are arranged in the outermost corner areas of the rectangular shape. This arrangement has the advantage, that the means of radiation 101 are relatively far from the swivel axes 103 and 104 and are subject to the largest swiveling motion. Therefore, the adjustment of the radiation direction can be executed more accurately.
  • FIG. 2 shows an LCD-screen 200 which consists of several segments. Each of the segments can assume two states. In a first state, the light of the light sources 100 as well as the non-visible radiation of the means of radiation 101 can pass. In a second state, the light of the light sources 100 as well as the non-visible radiation of the means of radiation 101 is blocked. This can for example be achieved by polarizing the radiation and/or the light and by using a liquid crystal.
  • the patterns 300 and 400 are represented, which can be set on the LCD-screen 200 . To this end, some of the segments of the LCD-screen are switched to the second state. They are represented in black in the FIGS. 3 and 4 .
  • Pattern 300 shows a striped pattern and pattern 400 shows a cross. Both patterns 300 and 400 can be used for the adjustment of the radiation direction of the light and of the non-visible electromagnetic radiation.
  • the means of detection can in particular be embodied to detect the non-visible electromagnetic radiation and to not detect the light.
  • the means of detection is embodied to emit a signal comprising an indication of the radiation direction of the non-visible electromagnetic radiation. For example, a desired position of the pattern 300 or 400 on a driving lane surface in front of a motor vehicle can be specified and the means of detection emits a signal when the desired position is not identical with the actual position. A means of adjustment can then correct the radiation direction, so that the pattern 300 or 400 is in the desired position.
  • the non-visible electromagnetic radiation for the detection of the radiation direction, as the pattern is difficult to detect by the driver or not at all.
  • the light distribution perceived by the driver on the road surface is hardly disturbed by the pattern 300 or 400 and the means of radiation 101 or not at all.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
US16/091,327 2016-04-12 2017-04-07 Lighting device for a motor vehicle Abandoned US20190135165A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016106649.4A DE102016106649A1 (de) 2016-04-12 2016-04-12 Beleuchtungseinrichtung für ein Kraftfahrzeug
DE102016106649.4 2016-04-12
PCT/EP2017/058391 WO2017178369A1 (de) 2016-04-12 2017-04-07 Beleuchtungseinrichtung für ein kraftfahrzeug

Publications (1)

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US20190135165A1 true US20190135165A1 (en) 2019-05-09

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US16/091,327 Abandoned US20190135165A1 (en) 2016-04-12 2017-04-07 Lighting device for a motor vehicle

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US (1) US20190135165A1 (de)
CN (1) CN109070791B (de)
DE (1) DE102016106649A1 (de)
WO (1) WO2017178369A1 (de)

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JP7000114B2 (ja) 2017-10-24 2022-01-19 スタンレー電気株式会社 自動車用路面描画の光軸変更方法及び制御システム
DE102018121144B3 (de) * 2018-08-29 2019-11-21 Visicon Automatisierungstechnik Gmbh Verfahren und Vorrichtung zum Überprüfen der Einstellung von Scheinwerfern von Kraftfahrzeugen
US20200263846A1 (en) * 2019-02-20 2020-08-20 Magna Closures Inc. Vehicle light assembly with quantum doped material illuminable using distinct illumination sources
CN109737355A (zh) * 2019-03-14 2019-05-10 华域视觉科技(上海)有限公司 自动调节高度的汽车大灯以及高度自动调节方法
CN109808586A (zh) * 2019-03-14 2019-05-28 华域视觉科技(上海)有限公司 自动调控的汽车大灯以及自动调控方法

Citations (2)

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EP1270325A2 (de) * 2001-06-26 2003-01-02 Hella KG Hueck & Co. Scheinwerfer für Fahrzeuge
US20180297506A1 (en) * 2017-04-12 2018-10-18 Ford Global Technologies, Llc Driving assistance system with short-distance ranging

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Publication number Priority date Publication date Assignee Title
EP1270325A2 (de) * 2001-06-26 2003-01-02 Hella KG Hueck & Co. Scheinwerfer für Fahrzeuge
US20180297506A1 (en) * 2017-04-12 2018-10-18 Ford Global Technologies, Llc Driving assistance system with short-distance ranging

Also Published As

Publication number Publication date
WO2017178369A1 (de) 2017-10-19
CN109070791A (zh) 2018-12-21
DE102016106649A1 (de) 2017-10-12
CN109070791B (zh) 2022-09-06

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AS Assignment

Owner name: HELLA GMBH & CO. KGAA, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WILKS, CARSTEN;KUBITZA, BORIS;REEL/FRAME:048834/0052

Effective date: 20190211

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION